
TY  - JOUR
A1  - Furbank, RT 
A1  - Badger, MR 
T1  - Photosynthetic Oxygen Exchange in Attached Leaves of C<sub>4</sub> Monocotyledons
JF  - Functional Plant Biology
JO  - Functional Plant Biol.
Y1  - 1982
VL  - 9
IS  - 5
SP  - 553
EP  - 558
KW  - 
UR  - https://doi.org/10.1071/PP9820553 
N2  - Photosynthetic O2 evolution, O2 uptake and CO2 uptake by intact leaves from plants of the three C4 decarboxylation types were examined using mass-spectrometric gas-exchange and stable isotope techniques. All species showed a relative insensitivity of O2 uptake to CO2 concentration. The uptake rates observed were between 0.2 and 1 nmol O2 cm-2 S-1 at the CO2 compensation point. At ambient external CO2, NADP-malic enzyme type species showed the lowest average O2 uptake, phosphoenolpyruvate carboxykinase types the highest values, and NAD-malic enzyme types showed intermediate values for O2 uptake. These results are discussed in relation to the contributions to O2 uptake of ribulosebisphosphate oxygenase and photoreduction of oxygen. 
ER  -

